STUDY: College Isn’t the Main Reason Women Delay Starting a Family

Achieving higher education may not be the main reason why women in the UK delay pregnancy, demographers have discovered. Family background appears particularly relevant to explain the link between the age women first give birth and their level of education.

In parallel, the number of years that women spend in school and university has also increased. A number of studies have suggested that there is a causal link between this and their postponement of pregnancy. However, the research published in the journal Demography, now suggests that the effects of education may not be as large as expected.

With an innovative study design, looking both at education enrolment and fertility trends in the general population as well as female identical twins, they attempt to untangle the effects of genes, family background and education on fertility behaviours.

“Together with mortality and migration, fertility is a crucial factor to understand what shapes our social structure and how a society is going to fare in the future. Age at first birth is the main determinant of how many children women have, and so it is very important for demographers to understand what influences it and if education enrolment is involved, how significant a part it plays”, study author Felix Tropf, from the University of Oxford, told IBTimes UK.

Extra year in school, six months older mothers

The researchers analysed the fertility histories of 2,752 identical female twins from a large twin register set up in 1992 in the UK. This approach is interesting because twins share genes and similar family backgrounds, so this isolates the effects of potentially different levels of education.

Analysing the data, the scientists estimated that for every extra year of educational enrolment after the age of 12, a woman delayed motherhood by an average half a year. However, their model also suggests that family background – from socio-economic environment to genes – better explained why women delayed pregnancy. Education alone is estimated to contribute to only 1.5 months of the total six-month delay.

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